My cat used to do that whenever he heard the vacuum cleaner. Haa haa.
So cute and so typical. I once slept over at a friend's house on a futon on the floor. In the morning, I could hear a thump, thump, thump followed by a "meow", and then another thump. Their cat was running up the screen door, looking at me through a cutout window in the main door while it meowed, and then jump down only to repeat the process all over again. Unbelievable.
Oh wow. Love this so much. I like the climber's accomplice just lurking in the other window.